# IronScope - Metal Detector — Magnetic Field · EMF Detector

> Magnetic Field · EMF Detector (iPhone/iPad app by 杰 向.)

- Source: https://appshunter.io/ios/app/ironscope-metal-detector/id6762010256 (this page in markdown: same URL + `.md`)
- Developer: [杰 向](https://appshunter.io/developer/1860305678)
- Category: Utilities, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 1 MB
- Languages: English, Chinese
- Released: 2026-04-21
- Data updated: 2026-06-26
- User reviews in markdown: https://appshunter.io/ios/app/ironscope-metal-detector/id6762010256/reviews.md

## What is IronScope?

IronScope uses your iPhone's built-in magnetometer to show nearby magnetic-field changes in microteslas (µT). It is a phone magnetometer field meter for close-range ferromagnetic objects, learning, and everyday curiosity. It is not a professional metal detector and must not be used for security screening, mining, infrastructure locating, or safety decisions.

KEY FEATURES
• Real-time magnetic field reading in µT
• Color-coded gauge with optional audio alert
• One-tap calibration to the local magnetic baseline
• Clear unavailable-state messaging on simulators or unsupported devices
• Fully offline — no network, no tracking, no ads, no account

PRACTICAL USES
• Observe field changes near keys, screws, magnets, and steel objects
• Compare magnetic and non-magnetic items at close range
• Demonstrate magnetism in a classroom or maker setting
• Check how magnetic cases, mounts, and accessories affect your phone

HOW IT WORKS
The iPhone magnetometer reads the ambient magnetic field. IronScope subtracts your calibrated baseline, often near Earth's natural 25–65 µT range, and shows nearby changes as excess signal. Readings vary by phone model, orientation, calibration, cases, magnets, and nearby electronics.

LIMITATIONS
Smartphone magnetometers are not professional metal detectors. Non-magnetic metals such as aluminum and copper may not change the reading. Deep or hidden objects are not reliable targets. Keep the phone away from strong magnets that could affect device sensors.

PRIVACY
Magnetometer readings are processed locally. No audio, video, location, analytics, ads, account, or tracking is used.


SUBSCRIPTION INFO
• Payment will be charged to your Apple ID account at confirmation of purchase.
• Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period.
• Your account will be charged for renewal within 24 hours prior to the end of the current period.
• You can manage and cancel your subscriptions by going to App Store → Account → Subscriptions.

Privacy Policy: https://frexx.top/ironscope/privacy.html
Terms of Use: https://frexx.top/ironscope/terms.html

SUPPORT
jie.xiang.jm@gmail.com

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| IronScope Pro Yearly | $19.90 | per year |
| IronScope Pro Weekly | $1.59 | per 7 days |



## Version history (last 4 releases)

### 1.0.6 — 2026-06-20

IronScope now adds Scan Confidence, a clearer read on sensor availability, baseline quality, signal excess, sampling mode, and the next action before you trust a reading. The Pro paywall also includes a direct Support link, while calibration, CSV export, privacy boundaries, and subscription IDs stay intact.

### 1.0.4 — 2026-06-02

This update completes the English in-app experience and adds a clear fallback when a device or simulator does not provide magnetometer data. IronScope now explains that readings are phone magnetometer estimates and should not be used for security screening, mining, or safety decisions. The history, calibration, export, subscription flow, and StoreKit messages have also been refreshed. Existing subscriptions are preserved.

### 1.0.3 — 2026-05-07

Bug fixes and subscription review compliance improvements.

### 1.0.2 — 2026-04-21

No release notes.

## More apps by 杰 向

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All apps by 杰 向: https://appshunter.io/developer/1860305678

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-26.*